William Henry Albers of Albers Supermarkets

I am researching my Plogmann family history and trying to tie up some loose ends.I knew that one of the Plogmanns was married to an Albers.I found a chain on this page about William Henry Albers being married to a Plogmann.That would be Caroline Plogmann who died on 6-1-1909.Her sister, Catherine Plogmann Toennis was my g-grandmother.William and Caroline had two daughters, Irene (who married a Dornheggen) and Jeanette.If anyone has any info on this family, I would like to accurately fill in any blanks!Or better yet, any info on the Plogmanns is appreciated!